Make sure we finish processing the head filter in a pipeline when the tail is done. The head filter may have unprocessed EOD markers left even after the tail has finished processing.

1 files changed, 8 insertions, 0 deletions

diff --git a/fitz/filt_pipeline.c b/fitz/filt_pipeline.c
index 85dc1f82..eec24803 100644
--- a/fitz/filt_pipeline.c
+++ b/fitz/filt_pipeline.c
@@ -129,7 +129,15 @@ tail:
 	}
 
 	else if (e == fz_iodone)
+	{
+		/* Make sure that the head is also done.
+		 * It may still contain end-of-data markers or garbage.
+		 */
+		e = fz_process(p->head, in, p->buffer);
+		if (e != fz_iodone)
+			fz_catch(e, "head filter not done");
 		return fz_iodone;
+	}
 
 	else if (e)
 		return fz_rethrow(e, "cannot process tail filter");